Had a quick look. You're eating a lot of salty foods, which might mean you're retaining some water. Are you making sure to drink a lot?

I also think your calories are too low, given your weight. You might try boosting them up a bit. Are you shooting for 65-70% fat?

Aside from the aspartame, which is quite possibly the culprit, the only potential staller I see is the squash. It can be quite carby. Are you being very careful with your measurements of foods like that?

Hang in there! You'll figure it out. And you'll be glad you stuck it out, despite the frustration.

K.